Of course it is Shirley Temple. How could you doubt your wife? The movie was called "Curly Top", done in 1935, copyright 20th Century Fox (renewed 1963). Unforgettable classic with Arthur Treacher. Maybe you can find it by searching www.dogpile.com

I just listened to Shirley Temple singing ANIMAL CRACKERS IN MY SOUP at YouTube. The video seems to be an excerpt from her movie "Curly Top" (1935). Following the verses posted by Gargoyle above, there are these additional verses, following which she reprises the first part:

Animal crackers in my soup do funny things to me. They make me think my neighborhood is a big menagerie.

For instance, there's a janitor; his name is Mister Klein, And when he hollers at us kids, he reminds me of a lion.

The grocer is so big and fat; he has a big mustache. He looks just like a walrus just before he makes a splash.

VERSE: Ev'rybody has some weakness, and so have I— Something I long for, I'm mighty strong for. It's my only dissipation, I won't deny. You would never guess What brings me happiness.

CHORUS: Oh, I'm just wild about Animal crackers, animal crackers! I can't live without Animal crackers, animal crackers! Bears and tigers haunt me all day, And whenever I am at a swell cafe, Say, all I order is Animal crackers, animal crackers! Firecrackers won't do. Goodness gracious! I'm no chump. I just bit off a camel's hump. Animal crackers, I love you.

Animal crackers and cocoa to drink, That is the finest of suppers, I think. When I'm grown up and can have what I please, I think I shall always insist upon these. What do you choose when you're offered a treat? When Mother says, "What would you like best to eat?" Is it waffles and syrup, or cinnamon toast? It's cocoa and animals that I love most!

The kitchen's the cosiest place that I know. The kettle is singing; the stove is aglow, And there in the twilight, how jolly to see The cocoa and animals waiting for me. Daddy and Mother dine later in state, With Mary to cook for them, Susan to wait; But they don't have nearly as much fun as I, Who eat in the kitchen with Nurse standing by; And Daddy once said, he would like to be me, Having cocoa and animals once more for tea.